Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae6eb7aab8617bd4…

MALICIOUS

PDF

73.6 KB Created: 2020-12-25 00:00:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 065e28b2c4722e378be8a21e17e41985 SHA-1: 15c5228888ff7b39567bd241d48cf30dc1904558 SHA-256: ae6eb7aab8617bd4a11c90b53a2e865c0bf84d03f8ceb46efc3844effb004af9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafffe.ru/123?utm_term=night+time+is+the+right+time+to+fight+crime PDF link annotation
    • https://cdn.sqhk.co/kebubupoxiz/ghjhCjc/daily_task_list_template_for_work_word.pdfIn PDF document text
    • https://cdn.sqhk.co/wafixagi/jfBooif/bikefogo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f9a4ade-eb68-4829-b599-60693b37489b/budomubofago.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/balapam_patti_bhama_odilo_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09f09a11-6940-4be1-b2d8-cbde1d79fc64/town_of_scarborough_maine_planning_board.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3d4a179-3f6e-4dd5-a4b0-882df9fade21/85051892440.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/job_application_letter_sample_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57f4e884-ee52-4c5c-bfc5-69c01c3947e6/vopagesimanugasot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ae953cd-df73-4335-92dc-7dd724df909d/vitamin_c_song_can.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9c39ba8-a31f-4df8-8c92-15526eb6c73a/university_of_michigan_school_of_dentistry_academic_calendar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10026d58-c2e2-48ca-b4b8-cbed62b8b29d/piliwamosetarewimera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05475b4f-cb63-47ea-80df-6f74b38d54c2/ameda_breast_pump_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/243d3dd6-edd5-4ddc-bda9-018f9820a9f2/letters_that_start_with_g_in_spanish.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE281 5020 bytes
SHA-256: adf19b7043a441cc595ac792a072e569de10d023e5cb89c3ab59834a5ec1ebcb
font_01_sfnt_off0000f381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF381 11160 bytes
SHA-256: 06e9338890848e8ab9ab5b74a744fefd5974c0254a9becda5ded7dce92d79c02

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